In his new interview with Billboard, Charlie Puth confirmed that something did indeed happen between him and Selena back in 2016, however, it was very short-lived.

["It was] very small, but very impactful. And it really messed me up,” Charlie confessed while speaking about his and Selena‘s collaboration “We Don’t Talk Anymore”.

He added, “It’s about a particular moment in my life, when someone very close to me wanted the attention of somebody else. When I found that out and we ended it, I might have done some shady things too, and she might have asked me, ‘How long has this been going on?’”

“I’m trying to put this the best way possible: It wasn’t like I was the only person on her mind. And I think I knew that going in–what I was getting myself into,” Charlie says.

However their short-lived relationship won’t stop him from still performing the track.

“She evoked such good emotion on that song, it was a pleasure working with her. That’s why I’m always happy to sing it, even though it came from a dark point in my life.”

Speaking with Billboard in his cover story, the singer/songwriter opened up about how after his first album was rushed, he re-focused on the basics.

“I didn’t feel like an artist until ‘Attention’ came out,” Charlie revealed. “And I feel like people are just starting to get it. I’m not mad that they’re just finding out — they’re getting the message I wasn’t allowed to say before.”

He adds, “‘Attention’ is me saying, ‘F*** everybody: I’m doing this song the way I want to do it.’”

“So I have good news and bad news. The bad news is that I have to push the album release date. I’m producing this album all myself and with that comes a lot of work, and in my opinion, the album is not perfect yet. However, it will still come out this year, and soon,” he wrote on Twitter.

“But to make it up to all of you, here’s the good news. I’m putting out a song I did with Boys II Men tomorrow. And it’s probably one of my favorite songs I’ve ever written. Love you guys and thank you for understanding.”

Voicenotes will now be released on May 11.

Listen to “If You Leave Me Now” below! You can also download the song on iTunes.

The “Attention” singer revealed that the two first laid down the track in a closet!

“Taylor Swift introduced us at this VMA afterparty a while back,” he told Billboard. “I think I even was like, ‘We should do something sometime.’ I say that to every artist I meet, because I just can’t believe I’m in this position where people want to work with me. But I didn’t actually think it was gonna happen.”

“I think four months went by, and it happened — but in a very strange way,” he continued. “I had sent the demo of ‘We Don’t Talk Anymore,’ where it was originally all me, and I played it for her over FaceTime — I was in the Philippines. She was like, ‘I love this,’ and it hit me. I was like, ‘This could be a duet.’ Everybody has experience with the sentiment of the song meaning, I think. I certainly have, she has, so it just felt very real when she performed it.”

The “Attention” singer co-wrote the former One Direction member’s hit song “Bedroom Floor,” so they’ve spent a lot of time together.

“That was the most fun I had ever had, writing that record,” Charlie told Billboard. “We were all at Conway, which is a really nice recording studio. And we were all just messing around; nothing was really coming when we were writing.”

“I just pictured what a leprechaun would sing, because I think there were Lucky Charms in the room or I had had them for breakfast,” Charlie continued. “Like, what would a leprechaun melody be? [Sings "Bedroom Floor" hook.] And Noel [Zancanella], who works with Ryan Tedder and OneRepublic, had this cool sound like ‘boom boom boom’ and I was thinking, ‘Oh, it could be like a dance record or something like that.’ And out of nowhere, that melody, that joke melody I had, fit perfectly on to one of the dancey chords. … We were dancing around, such a fun songwriting session.”

“I think some time went by, like six months, and I played it for Liam when he was in the studio,” Charlie added. “And fun fact, he has no air conditioning in the studio. He keeps it at about 80 degrees. He drinks warm milk … and sings the song perfectly. I don’t really understand how that’s possible. I mean, it works for him. I don’t know if I would be able to pull that off — I go to bed at like, 9 p.m. every night.”

Shawn Mendes is a man of many talents and songwriting is just one of them, except his friend and tourmate Charlie Puth did not know this about him at first!

Charlie and Shawn toured together this year and the “Attention” singer says he was surprised to find out that Shawn writes his own songs.

“He’ll hate me for saying this, but I just assumed he had other people writing most of his material,” Charlie told Billboard. “But when he sat down and just started singing melodies, kind of like I did, I was like, ‘Wow! That’s really impressive.’ Don’t judge a book by its cover.”